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Income Taxes Income Tax Reconciliation (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Effective Income Tax Rate [Line Items] |  |  |  |  |  |  |  |  |  |  |
Statutory U.S. Federal Tax Rate |  |  |  |  |  |  |  |  | 21.00% | 35.00% |
Expected income taxes |  |  |  |  |  |  |  |  | $ 10,186 | $ 14,604 | $ 11,823
Tax-exempt income from bank owned life insurance |  |  |  |  |  |  |  |  | 283 | 573 | 235
Other tax exempt income |  |  |  |  |  |  |  |  | (1,598) | (2,223) | (1,577)
Nondeductible interest expense |  |  |  |  |  |  |  |  | 43 | 28 | 21
State taxes, net of federal taxes |  |  |  |  |  |  |  |  | 3,354 | 2,062 | 1,628
Other items |  |  |  |  |  |  |  |  | 218 | (266) | 280
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount |  |  |  |  |  |  |  |  | 0 | 1,410 | 0
Effect of marginal tax rate |  |  |  |  |  |  |  |  | (15) | 0 | 0
Total | $ 3,206 | $ 2,731 | $ 3,105 | $ 2,863 | $ 4,497 | $ 3,538 | $ 3,927 | $ 3,080 | $ 11,905 | $ 15,042 | $ 11,940

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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 + Details
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